Conrad RTF MSP190 Notice D'emploi page 47

Roll trimming:
If the helicopter tends to drift or tilt to the right, reduce the speed until the helicopter is standing on its skids again
safety, and then push the left one of the two trim buttons for the roll function (also see figure 1, item 4).
Push the pitch lever carefully forward and check if the adjustment was sufficient. Repeat the procedure until the model
does not show any tendency to drift to the right.
If the helicopter wants to turn or tilt sideways to the right, push the right one of the two trim buttons for the roll function
(see figure 1, item 4).
Every operation of a button is confirmed by a short signal sound at a different pitch. The two end positions of
the trimming are indicated acoustically with a quick sound sequence, and the centre position of the trimming
with a longer signal sound.
There are 16 trimming steps each to the left and right. The last value set is automatically saved and called
again after re-activation of the remote control.
Figure 15
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